70528309843 has 4 divisors (see below), whose sum is σ = 70623234288. Its totient is φ = 70433385400.

The previous prime is 70528309837. The next prime is 70528309883. The reversal of 70528309843 is 34890382507.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70528309843 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70528309883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47461108 + ... + 47462593.

It is an arithmetic number, because the mean of its divisors is an integer number (17655808572).

Almost surely, 2^70528309843 is an apocalyptic number.

70528309843 is a deficient number, since it is larger than the sum of its proper divisors (94924445).

70528309843 is an equidigital number, since it uses as much as digits as its factorization.

70528309843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94924444.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 70528309843 in words is "seventy billion, five hundred twenty-eight million, three hundred nine thousand, eight hundred forty-three".